-84.13% is the change from 800 to 127
Calculation steps:
[( 127 - 800 ) ÷ 800] x 100 = -84.13%
Formula
Percentage change = [(127 - 800) / 800] x 100
Subtract the new number by the original number
127 - 800 = -673
-673 ÷ 800 = -0.84125
-0.84125 x 100 = -84.13%