-7.17% is the change from 251 to 233
Calculation steps:
[( 233 - 251 ) ÷ 251] x 100 = -7.17%
Formula
Percentage change = [(233 - 251) / 251] x 100
Subtract the new number by the original number
233 - 251 = -18
-18 ÷ 251 = -0.07171314741035857
-0.07171314741035857 x 100 = -7.17%