33.16% is the change from 193 to 257
Calculation steps:
[( 257 - 193 ) ÷ 193] x 100 = 33.16%
Formula
Percentage change = [(257 - 193) / 193] x 100
Subtract the new number by the original number
257 - 193 = 64
64 ÷ 193 = 0.3316062176165803
0.3316062176165803 x 100 = 33.16%