-94.64% is the change from 839 to 45
Calculation steps:
[( 45 - 839 ) ÷ 839] x 100 = -94.64%
Formula
Percentage change = [(45 - 839) / 839] x 100
Subtract the new number by the original number
45 - 839 = -794
-794 ÷ 839 = -0.9463647199046484
-0.9463647199046484 x 100 = -94.64%