-87.96% is the change from 839 to 101
Calculation steps:
[( 101 - 839 ) ÷ 839] x 100 = -87.96%
Formula
Percentage change = [(101 - 839) / 839] x 100
Subtract the new number by the original number
101 - 839 = -738
-738 ÷ 839 = -0.8796185935637664
-0.8796185935637664 x 100 = -87.96%