-29.08% is the change from 251 to 178
Calculation steps:
[( 178 - 251 ) ÷ 251] x 100 = -29.08%
Formula
Percentage change = [(178 - 251) / 251] x 100
Subtract the new number by the original number
178 - 251 = -73
-73 ÷ 251 = -0.2908366533864542
-0.2908366533864542 x 100 = -29.08%