-79.3% is the change from 633 to 131
Calculation steps:
[( 131 - 633 ) ÷ 633] x 100 = -79.3%
Formula
Percentage change = [(131 - 633) / 633] x 100
Subtract the new number by the original number
131 - 633 = -502
-502 ÷ 633 = -0.7930489731437599
-0.7930489731437599 x 100 = -79.3%