78.85% is the change from 520 to 930
Calculation steps:
[( 930 - 520 ) ÷ 520] x 100 = 78.85%
Formula
Percentage change = [(930 - 520) / 520] x 100
Subtract the new number by the original number
930 - 520 = 410
410 ÷ 520 = 0.7884615384615384
0.7884615384615384 x 100 = 78.85%