-55.09% is the change from 501 to 225
Calculation steps:
[( 225 - 501 ) ÷ 501] x 100 = -55.09%
Formula
Percentage change = [(225 - 501) / 501] x 100
Subtract the new number by the original number
225 - 501 = -276
-276 ÷ 501 = -0.5508982035928144
-0.5508982035928144 x 100 = -55.09%