-79.28% is the change from 637 to 132
Calculation steps:
[( 132 - 637 ) ÷ 637] x 100 = -79.28%
Formula
Percentage change = [(132 - 637) / 637] x 100
Subtract the new number by the original number
132 - 637 = -505
-505 ÷ 637 = -0.792778649921507
-0.792778649921507 x 100 = -79.28%