-16.91% is the change from 627 to 521
Calculation steps:
[( 521 - 627 ) ÷ 627] x 100 = -16.91%
Formula
Percentage change = [(521 - 627) / 627] x 100
Subtract the new number by the original number
521 - 627 = -106
-106 ÷ 627 = -0.16905901116427433
-0.16905901116427433 x 100 = -16.91%