-42.54% is the change from 891 to 512
Calculation steps:
[( 512 - 891 ) ÷ 891] x 100 = -42.54%
Formula
Percentage change = [(512 - 891) / 891] x 100
Subtract the new number by the original number
512 - 891 = -379
-379 ÷ 891 = -0.42536475869809204
-0.42536475869809204 x 100 = -42.54%