-56.49% is the change from 717 to 312
Calculation steps:
[( 312 - 717 ) ÷ 717] x 100 = -56.49%
Formula
Percentage change = [(312 - 717) / 717] x 100
Subtract the new number by the original number
312 - 717 = -405
-405 ÷ 717 = -0.5648535564853556
-0.5648535564853556 x 100 = -56.49%