85.71% is the change from 525 to 975
Calculation steps:
[( 975 - 525 ) ÷ 525] x 100 = 85.71%
Formula
Percentage change = [(975 - 525) / 525] x 100
Subtract the new number by the original number
975 - 525 = 450
450 ÷ 525 = 0.8571428571428571
0.8571428571428571 x 100 = 85.71%