56.38% is the change from 525 to 821
Calculation steps:
[( 821 - 525 ) ÷ 525] x 100 = 56.38%
Formula
Percentage change = [(821 - 525) / 525] x 100
Subtract the new number by the original number
821 - 525 = 296
296 ÷ 525 = 0.5638095238095238
0.5638095238095238 x 100 = 56.38%