-34.46% is the change from 621 to 407
Calculation steps:
[( 407 - 621 ) ÷ 621] x 100 = -34.46%
Formula
Percentage change = [(407 - 621) / 621] x 100
Subtract the new number by the original number
407 - 621 = -214
-214 ÷ 621 = -0.3446054750402576
-0.3446054750402576 x 100 = -34.46%