-27.34% is the change from 717 to 521
Calculation steps:
[( 521 - 717 ) ÷ 717] x 100 = -27.34%
Formula
Percentage change = [(521 - 717) / 717] x 100
Subtract the new number by the original number
521 - 717 = -196
-196 ÷ 717 = -0.2733612273361227
-0.2733612273361227 x 100 = -27.34%