-51.51% is the change from 431 to 209
Calculation steps:
[( 209 - 431 ) ÷ 431] x 100 = -51.51%
Formula
Percentage change = [(209 - 431) / 431] x 100
Subtract the new number by the original number
209 - 431 = -222
-222 ÷ 431 = -0.5150812064965197
-0.5150812064965197 x 100 = -51.51%