64.23% is the change from 520 to 854
Calculation steps:
[( 854 - 520 ) ÷ 520] x 100 = 64.23%
Formula
Percentage change = [(854 - 520) / 520] x 100
Subtract the new number by the original number
854 - 520 = 334
334 ÷ 520 = 0.6423076923076924
0.6423076923076924 x 100 = 64.23%