-79.37% is the change from 630 to 130
Calculation steps:
[( 130 - 630 ) ÷ 630] x 100 = -79.37%
Formula
Percentage change = [(130 - 630) / 630] x 100
Subtract the new number by the original number
130 - 630 = -500
-500 ÷ 630 = -0.7936507936507936
-0.7936507936507936 x 100 = -79.37%