-79.94% is the change from 633 to 127
Calculation steps:
[( 127 - 633 ) ÷ 633] x 100 = -79.94%
Formula
Percentage change = [(127 - 633) / 633] x 100
Subtract the new number by the original number
127 - 633 = -506
-506 ÷ 633 = -0.7993680884676145
-0.7993680884676145 x 100 = -79.94%