-15.57% is the change from 931 to 786
Calculation steps:
[( 786 - 931 ) ÷ 931] x 100 = -15.57%
Formula
Percentage change = [(786 - 931) / 931] x 100
Subtract the new number by the original number
786 - 931 = -145
-145 ÷ 931 = -0.15574650912996776
-0.15574650912996776 x 100 = -15.57%