-19.75% is the change from 633 to 508
Calculation steps:
[( 508 - 633 ) ÷ 633] x 100 = -19.75%
Formula
Percentage change = [(508 - 633) / 633] x 100
Subtract the new number by the original number
508 - 633 = -125
-125 ÷ 633 = -0.19747235387045814
-0.19747235387045814 x 100 = -19.75%