-19.12% is the change from 633 to 512
Calculation steps:
[( 512 - 633 ) ÷ 633] x 100 = -19.12%
Formula
Percentage change = [(512 - 633) / 633] x 100
Subtract the new number by the original number
512 - 633 = -121
-121 ÷ 633 = -0.1911532385466035
-0.1911532385466035 x 100 = -19.12%