-14.59% is the change from 610 to 521
Calculation steps:
[( 521 - 610 ) ÷ 610] x 100 = -14.59%
Formula
Percentage change = [(521 - 610) / 610] x 100
Subtract the new number by the original number
521 - 610 = -89
-89 ÷ 610 = -0.14590163934426228
-0.14590163934426228 x 100 = -14.59%