86.84% is the change from 266 to 497
Calculation steps:
[( 497 - 266 ) ÷ 266] x 100 = 86.84%
Formula
Percentage change = [(497 - 266) / 266] x 100
Subtract the new number by the original number
497 - 266 = 231
231 ÷ 266 = 0.868421052631579
0.868421052631579 x 100 = 86.84%