76.35% is the change from 520 to 917
Calculation steps:
[( 917 - 520 ) ÷ 520] x 100 = 76.35%
Formula
Percentage change = [(917 - 520) / 520] x 100
Subtract the new number by the original number
917 - 520 = 397
397 ÷ 520 = 0.7634615384615384
0.7634615384615384 x 100 = 76.35%