-79.81% is the change from 644 to 130
Calculation steps:
[( 130 - 644 ) ÷ 644] x 100 = -79.81%
Formula
Percentage change = [(130 - 644) / 644] x 100
Subtract the new number by the original number
130 - 644 = -514
-514 ÷ 644 = -0.7981366459627329
-0.7981366459627329 x 100 = -79.81%