19.55% is the change from 266 to 318
Calculation steps:
[( 318 - 266 ) ÷ 266] x 100 = 19.55%
Formula
Percentage change = [(318 - 266) / 266] x 100
Subtract the new number by the original number
318 - 266 = 52
52 ÷ 266 = 0.19548872180451127
0.19548872180451127 x 100 = 19.55%