91% is the change from 522 to 997
Calculation steps:
[( 997 - 522 ) ÷ 522] x 100 = 91%
Formula
Percentage change = [(997 - 522) / 522] x 100
Subtract the new number by the original number
997 - 522 = 475
475 ÷ 522 = 0.9099616858237548
0.9099616858237548 x 100 = 91%