96.6% is the change from 265 to 521
Calculation steps:
[( 521 - 265 ) ÷ 265] x 100 = 96.6%
Formula
Percentage change = [(521 - 265) / 265] x 100
Subtract the new number by the original number
521 - 265 = 256
256 ÷ 265 = 0.9660377358490566
0.9660377358490566 x 100 = 96.6%