-79.72% is the change from 641 to 130
Calculation steps:
[( 130 - 641 ) ÷ 641] x 100 = -79.72%
Formula
Percentage change = [(130 - 641) / 641] x 100
Subtract the new number by the original number
130 - 641 = -511
-511 ÷ 641 = -0.797191887675507
-0.797191887675507 x 100 = -79.72%