-55.8% is the change from 509 to 225
Calculation steps:
[( 225 - 509 ) ÷ 509] x 100 = -55.8%
Formula
Percentage change = [(225 - 509) / 509] x 100
Subtract the new number by the original number
225 - 509 = -284
-284 ÷ 509 = -0.5579567779960707
-0.5579567779960707 x 100 = -55.8%