-31.44% is the change from 633 to 434
Calculation steps:
[( 434 - 633 ) ÷ 633] x 100 = -31.44%
Formula
Percentage change = [(434 - 633) / 633] x 100
Subtract the new number by the original number
434 - 633 = -199
-199 ÷ 633 = -0.31437598736176936
-0.31437598736176936 x 100 = -31.44%