-82.2% is the change from 781 to 139
Calculation steps:
[( 139 - 781 ) ÷ 781] x 100 = -82.2%
Formula
Percentage change = [(139 - 781) / 781] x 100
Subtract the new number by the original number
139 - 781 = -642
-642 ÷ 781 = -0.8220230473751601
-0.8220230473751601 x 100 = -82.2%