-81.43% is the change from 781 to 145
Calculation steps:
[( 145 - 781 ) ÷ 781] x 100 = -81.43%
Formula
Percentage change = [(145 - 781) / 781] x 100
Subtract the new number by the original number
145 - 781 = -636
-636 ÷ 781 = -0.8143405889884763
-0.8143405889884763 x 100 = -81.43%