-79.07% is the change from 621 to 130
Calculation steps:
[( 130 - 621 ) ÷ 621] x 100 = -79.07%
Formula
Percentage change = [(130 - 621) / 621] x 100
Subtract the new number by the original number
130 - 621 = -491
-491 ÷ 621 = -0.7906602254428341
-0.7906602254428341 x 100 = -79.07%