-35.29% is the change from 646 to 418
Calculation steps:
[( 418 - 646 ) ÷ 646] x 100 = -35.29%
Formula
Percentage change = [(418 - 646) / 646] x 100
Subtract the new number by the original number
418 - 646 = -228
-228 ÷ 646 = -0.35294117647058826
-0.35294117647058826 x 100 = -35.29%