-91.39% is the change from 918 to 79
Calculation steps:
[( 79 - 918 ) ÷ 918] x 100 = -91.39%
Formula
Percentage change = [(79 - 918) / 918] x 100
Subtract the new number by the original number
79 - 918 = -839
-839 ÷ 918 = -0.9139433551198257
-0.9139433551198257 x 100 = -91.39%