45.2% is the change from 177 to 257
Calculation steps:
[( 257 - 177 ) ÷ 177] x 100 = 45.2%
Formula
Percentage change = [(257 - 177) / 177] x 100
Subtract the new number by the original number
257 - 177 = 80
80 ÷ 177 = 0.4519774011299435
0.4519774011299435 x 100 = 45.2%