18.42% is the change from 266 to 315
Calculation steps:
[( 315 - 266 ) ÷ 266] x 100 = 18.42%
Formula
Percentage change = [(315 - 266) / 266] x 100
Subtract the new number by the original number
315 - 266 = 49
49 ÷ 266 = 0.18421052631578946
0.18421052631578946 x 100 = 18.42%