85.99% is the change from 521 to 969
Calculation steps:
[( 969 - 521 ) ÷ 521] x 100 = 85.99%
Formula
Percentage change = [(969 - 521) / 521] x 100
Subtract the new number by the original number
969 - 521 = 448
448 ÷ 521 = 0.8598848368522073
0.8598848368522073 x 100 = 85.99%