-84.77% is the change from 847 to 129
Calculation steps:
[( 129 - 847 ) ÷ 847] x 100 = -84.77%
Formula
Percentage change = [(129 - 847) / 847] x 100
Subtract the new number by the original number
129 - 847 = -718
-718 ÷ 847 = -0.8476977567886659
-0.8476977567886659 x 100 = -84.77%