-84.2% is the change from 633 to 100
Calculation steps:
[( 100 - 633 ) ÷ 633] x 100 = -84.2%
Formula
Percentage change = [(100 - 633) / 633] x 100
Subtract the new number by the original number
100 - 633 = -533
-533 ÷ 633 = -0.8420221169036335
-0.8420221169036335 x 100 = -84.2%