77.97% is the change from 177 to 315
Calculation steps:
[( 315 - 177 ) ÷ 177] x 100 = 77.97%
Formula
Percentage change = [(315 - 177) / 177] x 100
Subtract the new number by the original number
315 - 177 = 138
138 ÷ 177 = 0.7796610169491526
0.7796610169491526 x 100 = 77.97%