64.95% is the change from 525 to 866
Calculation steps:
[( 866 - 525 ) ÷ 525] x 100 = 64.95%
Formula
Percentage change = [(866 - 525) / 525] x 100
Subtract the new number by the original number
866 - 525 = 341
341 ÷ 525 = 0.6495238095238095
0.6495238095238095 x 100 = 64.95%