82.34% is the change from 521 to 950
Calculation steps:
[( 950 - 521 ) ÷ 521] x 100 = 82.34%
Formula
Percentage change = [(950 - 521) / 521] x 100
Subtract the new number by the original number
950 - 521 = 429
429 ÷ 521 = 0.8234165067178503
0.8234165067178503 x 100 = 82.34%