8.9% is the change from 236 to 257
Calculation steps:
[( 257 - 236 ) ÷ 236] x 100 = 8.9%
Formula
Percentage change = [(257 - 236) / 236] x 100
Subtract the new number by the original number
257 - 236 = 21
21 ÷ 236 = 0.08898305084745763
0.08898305084745763 x 100 = 8.9%