-65.93% is the change from 910 to 310
Calculation steps:
[( 310 - 910 ) ÷ 910] x 100 = -65.93%
Formula
Percentage change = [(310 - 910) / 910] x 100
Subtract the new number by the original number
310 - 910 = -600
-600 ÷ 910 = -0.6593406593406593
-0.6593406593406593 x 100 = -65.93%