-29.99% is the change from 717 to 502
Calculation steps:
[( 502 - 717 ) ÷ 717] x 100 = -29.99%
Formula
Percentage change = [(502 - 717) / 717] x 100
Subtract the new number by the original number
502 - 717 = -215
-215 ÷ 717 = -0.299860529986053
-0.299860529986053 x 100 = -29.99%