78.57% is the change from 266 to 475
Calculation steps:
[( 475 - 266 ) ÷ 266] x 100 = 78.57%
Formula
Percentage change = [(475 - 266) / 266] x 100
Subtract the new number by the original number
475 - 266 = 209
209 ÷ 266 = 0.7857142857142857
0.7857142857142857 x 100 = 78.57%