-50.11% is the change from 451 to 225
Calculation steps:
[( 225 - 451 ) ÷ 451] x 100 = -50.11%
Formula
Percentage change = [(225 - 451) / 451] x 100
Subtract the new number by the original number
225 - 451 = -226
-226 ÷ 451 = -0.5011086474501109
-0.5011086474501109 x 100 = -50.11%