81.35% is the change from 520 to 943
Calculation steps:
[( 943 - 520 ) ÷ 520] x 100 = 81.35%
Formula
Percentage change = [(943 - 520) / 520] x 100
Subtract the new number by the original number
943 - 520 = 423
423 ÷ 520 = 0.8134615384615385
0.8134615384615385 x 100 = 81.35%