The following forms can see the product of their statistics reduced when they evolve. All 4,096 IV configurations are considered for the given League. A "partial" relationship indicates that some configurations are reduced on evolution. A "pure" relationship indicates that all configurations are reduced on evolution. An "absolute" relationship indicates that the best configuration of the evolved form has a lower stat product than the worst configuration of the base form.
PokémonGmean rangeEvolutionGmean rangeRelationship
Venusaur154.539–158.726Mega Venusaur152.180–156.535pure
Charizard150.171–154.398Mega Charizard X147.038–151.515pure
Charizard150.171–154.398Mega Charizard Y143.270–147.595absolute
Blastoise157.729–163.733Mega Blastoise149.348–153.832absolute
Pidgeot143.294–156.069Mega Pidgeot144.866–149.223partial (3487)
Raichu138.819–151.278Mega Raichu X144.001–148.387partial (1196)
Raichu138.819–151.278Mega Raichu Y136.561–140.749pure
Alakazam142.301–146.195Mega Alakazam136.759–141.184absolute
Victreebel146.394–153.515Mega Victreebel147.205–151.523partial (3785)
Slowbro158.331–162.833Mega Slowbro156.328–160.966pure
Gengar142.540–146.640Mega Gengar138.440–142.780pure
Rhydon152.458–157.005Rhyperior152.489–157.167partial (2091)
Kangaskhan157.654–162.068Mega Kangaskhan152.260–156.811absolute
Starmie150.199–154.469Mega Starmie145.516–149.884absolute
Scyther149.477–153.780Scizor148.403–152.649pure
Electabuzz144.292–154.290Electivire146.462–150.471partial (3405)
Magmar144.966–153.538Magmortar146.869–151.350partial (3375)
Pinsir147.636–151.650Mega Pinsir143.789–148.220pure
Gyarados150.852–155.554Mega Gyarados148.953–153.551partial (4095)
Aerodactyl149.581–153.829Mega Aerodactyl145.732–149.966pure
Dragonite148.658–153.131Mega Dragonite148.319–152.668partial (2612)
Mewtwo144.480–148.965Mega Mewtwo X140.173–144.572pure
Mewtwo144.480–148.965Mega Mewtwo Y139.365–144.117absolute
Ampharos152.538–156.656Mega Ampharos145.979–150.247absolute
Steelix162.872–170.490Mega Steelix158.162–163.306pure
Scizor148.403–152.649Mega Scizor147.164–151.872partial (3646)
Heracross149.360–153.724Mega Heracross142.860–147.266absolute
Piloswine149.381–158.724Mamoswine148.405–152.932partial (4073)
Skarmory147.545–160.480Mega Skarmory146.422–150.671partial (4091)
Houndoom147.610–151.710Mega Houndoom144.317–148.811pure
Porygon2154.420–158.604Porygon-Z144.565–148.954absolute
Tyranitar151.155–155.586Mega Tyranitar149.124–153.604partial (4088)
Sceptile148.931–153.048Mega Sceptile140.885–145.131absolute
Blaziken146.215–150.393Mega Blaziken140.187–144.400absolute
Swampert154.466–158.569Mega Swampert148.664–153.199absolute
Gardevoir148.732–152.912Mega Gardevoir142.546–146.802absolute
Vigoroth137.302–150.091Slaking147.708–152.119partial (1)
Aggron156.880–161.436Mega Aggron153.827–158.474pure
Manectric140.548–150.605Mega Manectric143.011–147.519partial (3077)
Camerupt138.950–151.809Mega Camerupt146.154–150.820partial (281)
Altaria144.891–157.433Mega Altaria152.174–156.959partial (282)
Banette138.169–148.890Mega Banette139.155–143.528partial (3807)
Absol141.528–146.094Mega Absol136.837–141.023absolute
Glalie143.361–156.116Mega Glalie146.518–151.051partial (2628)
Shelgon136.801–149.548Salamence145.810–150.087partial (16)
Salamence145.810–150.087Mega Salamence147.311–151.817partial (7)
Metagross149.579–154.091Mega Metagross148.359–152.838partial (3791)
Latias153.550–158.171Mega Latias149.722–154.164pure
Latios147.611–152.081Mega Latios143.670–148.059pure
Kyogre149.333–153.762Primal Kyogre145.096–149.768pure
Groudon149.333–153.762Primal Groudon145.096–149.768pure
Rayquaza145.205–149.671Mega Rayquaza141.320–145.758pure
Staraptor147.185–151.298Mega Staraptor147.085–151.390partial (2209)
Lopunny142.707–155.501Mega Lopunny144.891–149.283partial (3371)
Garchomp150.070–154.571Mega Garchomp145.059–149.468absolute
Lucario145.759–149.816Mega Lucario140.967–145.215absolute
Abomasnow150.891–159.927Mega Abomasnow150.237–154.752partial (4064)
Gallade148.732–152.912Mega Gallade142.546–146.802absolute
Shaymin155.909–160.476Sky Shaymin147.730–151.998absolute
Gurdurr141.401–153.994Conkeldurr149.222–153.744partial (266)
Scrafty151.466–162.472Mega Scrafty151.526–156.231partial (3854)
Chandelure143.235–147.839Mega Chandelure140.654–145.054pure
Fraxure136.457–148.819Haxorus143.563–147.753partial (532)
Kyurem150.434–154.909Kyurem White145.494–149.977absolute
Kyurem150.434–154.909Kyurem Black145.494–149.977absolute
Chesnaught155.823–160.191Mega Chesnaught154.533–159.155partial (4031)
Delphox150.186–154.155Mega Delphox143.120–147.633absolute
Greninja148.023–152.035Mega Greninja142.460–146.528absolute
Doublade151.834–158.572Aegislash134.292–147.713absolute
Malamar151.314–160.286Mega Malamar155.311–159.937partial (1882)
Diancie156.334–161.035Mega Diancie139.182–143.899absolute
Hoopa Confined145.915–150.406Hoopa Unbound141.868–146.265pure
Necrozma150.053–154.432Necrozma Dusk Mane147.954–152.614pure
Necrozma150.053–154.432Necrozma Dawn Wings147.954–152.614pure
Falinks146.601–155.987Mega Falinks146.885–151.395partial (3923)
Zacian150.350–154.882Zacian Crowned Sword144.044–148.428absolute
Arctibax139.334–152.274Baxcalibur148.420–153.180partial (46)
Dipplin152.889–161.720Hydrapple154.236–159.031partial (3638)
Pokémon GO: A Quantitative Approach