-22.4% is the change from 915 to 710
Calculation steps:
[( 710 - 915 ) ÷ 915] x 100 = -22.4%
Formula
Percentage change = [(710 - 915) / 915] x 100
Subtract the new number by the original number
710 - 915 = -205
-205 ÷ 915 = -0.22404371584699453
-0.22404371584699453 x 100 = -22.4%