-81.45% is the change from 771 to 143
Calculation steps:
[( 143 - 771 ) ÷ 771] x 100 = -81.45%
Formula
Percentage change = [(143 - 771) / 771] x 100
Subtract the new number by the original number
143 - 771 = -628
-628 ÷ 771 = -0.814526588845655
-0.814526588845655 x 100 = -81.45%