-91.29% is the change from 918 to 80
Calculation steps:
[( 80 - 918 ) ÷ 918] x 100 = -91.29%
Formula
Percentage change = [(80 - 918) / 918] x 100
Subtract the new number by the original number
80 - 918 = -838
-838 ÷ 918 = -0.9128540305010894
-0.9128540305010894 x 100 = -91.29%