-87.38% is the change from 800 to 101
Calculation steps:
[( 101 - 800 ) ÷ 800] x 100 = -87.38%
Formula
Percentage change = [(101 - 800) / 800] x 100
Subtract the new number by the original number
101 - 800 = -699
-699 ÷ 800 = -0.87375
-0.87375 x 100 = -87.38%