65.9% is the change from 522 to 866
Calculation steps:
[( 866 - 522 ) ÷ 522] x 100 = 65.9%
Formula
Percentage change = [(866 - 522) / 522] x 100
Subtract the new number by the original number
866 - 522 = 344
344 ÷ 522 = 0.6590038314176245
0.6590038314176245 x 100 = 65.9%