-11.67% is the change from 257 to 227
Calculation steps:
[( 227 - 257 ) ÷ 257] x 100 = -11.67%
Formula
Percentage change = [(227 - 257) / 257] x 100
Subtract the new number by the original number
227 - 257 = -30
-30 ÷ 257 = -0.11673151750972763
-0.11673151750972763 x 100 = -11.67%