-94.83% is the change from 870 to 45
Calculation steps:
[( 45 - 870 ) ÷ 870] x 100 = -94.83%
Formula
Percentage change = [(45 - 870) / 870] x 100
Subtract the new number by the original number
45 - 870 = -825
-825 ÷ 870 = -0.9482758620689655
-0.9482758620689655 x 100 = -94.83%