-79.59% is the change from 637 to 130
Calculation steps:
[( 130 - 637 ) ÷ 637] x 100 = -79.59%
Formula
Percentage change = [(130 - 637) / 637] x 100
Subtract the new number by the original number
130 - 637 = -507
-507 ÷ 637 = -0.7959183673469388
-0.7959183673469388 x 100 = -79.59%