139.63% is the change from 217 to 520
Calculation steps:
[( 520 - 217 ) ÷ 217] x 100 = 139.63%
Formula
Percentage change = [(520 - 217) / 217] x 100
Subtract the new number by the original number
520 - 217 = 303
303 ÷ 217 = 1.3963133640552996
1.3963133640552996 x 100 = 139.63%