-87.96% is the change from 847 to 102
Calculation steps:
[( 102 - 847 ) ÷ 847] x 100 = -87.96%
Formula
Percentage change = [(102 - 847) / 847] x 100
Subtract the new number by the original number
102 - 847 = -745
-745 ÷ 847 = -0.8795749704840614
-0.8795749704840614 x 100 = -87.96%