-87.67% is the change from 819 to 101
Calculation steps:
[( 101 - 819 ) ÷ 819] x 100 = -87.67%
Formula
Percentage change = [(101 - 819) / 819] x 100
Subtract the new number by the original number
101 - 819 = -718
-718 ÷ 819 = -0.8766788766788767
-0.8766788766788767 x 100 = -87.67%