-91.39% is the change from 929 to 80
Calculation steps:
[( 80 - 929 ) ÷ 929] x 100 = -91.39%
Formula
Percentage change = [(80 - 929) / 929] x 100
Subtract the new number by the original number
80 - 929 = -849
-849 ÷ 929 = -0.9138858988159311
-0.9138858988159311 x 100 = -91.39%