99.62% is the change from 266 to 531
Calculation steps:
[( 531 - 266 ) ÷ 266] x 100 = 99.62%
Formula
Percentage change = [(531 - 266) / 266] x 100
Subtract the new number by the original number
531 - 266 = 265
265 ÷ 266 = 0.9962406015037594
0.9962406015037594 x 100 = 99.62%