90% is the change from 520 to 988
Calculation steps:
[( 988 - 520 ) ÷ 520] x 100 = 90%
Formula
Percentage change = [(988 - 520) / 520] x 100
Subtract the new number by the original number
988 - 520 = 468
468 ÷ 520 = 0.9
0.9 x 100 = 90%
Example