24.76% is the change from 206 to 257
Calculation steps:
[( 257 - 206 ) ÷ 206] x 100 = 24.76%
Formula
Percentage change = [(257 - 206) / 206] x 100
Subtract the new number by the original number
257 - 206 = 51
51 ÷ 206 = 0.24757281553398058
0.24757281553398058 x 100 = 24.76%