-34.66% is the change from 251 to 164
Calculation steps:
[( 164 - 251 ) ÷ 251] x 100 = -34.66%
Formula
Percentage change = [(164 - 251) / 251] x 100
Subtract the new number by the original number
164 - 251 = -87
-87 ÷ 251 = -0.3466135458167331
-0.3466135458167331 x 100 = -34.66%