71.35% is the change from 520 to 891
Calculation steps:
[( 891 - 520 ) ÷ 520] x 100 = 71.35%
Formula
Percentage change = [(891 - 520) / 520] x 100
Subtract the new number by the original number
891 - 520 = 371
371 ÷ 520 = 0.7134615384615385
0.7134615384615385 x 100 = 71.35%