45.11% is the change from 521 to 756
Calculation steps:
[( 756 - 521 ) ÷ 521] x 100 = 45.11%
Formula
Percentage change = [(756 - 521) / 521] x 100
Subtract the new number by the original number
756 - 521 = 235
235 ÷ 521 = 0.4510556621880998
0.4510556621880998 x 100 = 45.11%