-50.57% is the change from 783 to 387
Calculation steps:
[( 387 - 783 ) ÷ 783] x 100 = -50.57%
Formula
Percentage change = [(387 - 783) / 783] x 100
Subtract the new number by the original number
387 - 783 = -396
-396 ÷ 783 = -0.5057471264367817
-0.5057471264367817 x 100 = -50.57%