-61.15% is the change from 538 to 209
Calculation steps:
[( 209 - 538 ) ÷ 538] x 100 = -61.15%
Formula
Percentage change = [(209 - 538) / 538] x 100
Subtract the new number by the original number
209 - 538 = -329
-329 ÷ 538 = -0.6115241635687733
-0.6115241635687733 x 100 = -61.15%