-18.73% is the change from 251 to 204
Calculation steps:
[( 204 - 251 ) ÷ 251] x 100 = -18.73%
Formula
Percentage change = [(204 - 251) / 251] x 100
Subtract the new number by the original number
204 - 251 = -47
-47 ÷ 251 = -0.18725099601593626
-0.18725099601593626 x 100 = -18.73%