-17.07% is the change from 627 to 520
Calculation steps:
[( 520 - 627 ) ÷ 627] x 100 = -17.07%
Formula
Percentage change = [(520 - 627) / 627] x 100
Subtract the new number by the original number
520 - 627 = -107
-107 ÷ 627 = -0.17065390749601275
-0.17065390749601275 x 100 = -17.07%