-69.74% is the change from 846 to 256
Calculation steps:
[( 256 - 846 ) ÷ 846] x 100 = -69.74%
Formula
Percentage change = [(256 - 846) / 846] x 100
Subtract the new number by the original number
256 - 846 = -590
-590 ÷ 846 = -0.6973995271867612
-0.6973995271867612 x 100 = -69.74%