85.41% is the change from 521 to 966
Calculation steps:
[( 966 - 521 ) ÷ 521] x 100 = 85.41%
Formula
Percentage change = [(966 - 521) / 521] x 100
Subtract the new number by the original number
966 - 521 = 445
445 ÷ 521 = 0.8541266794625719
0.8541266794625719 x 100 = 85.41%