-84.49% is the change from 819 to 127
Calculation steps:
[( 127 - 819 ) ÷ 819] x 100 = -84.49%
Formula
Percentage change = [(127 - 819) / 819] x 100
Subtract the new number by the original number
127 - 819 = -692
-692 ÷ 819 = -0.8449328449328449
-0.8449328449328449 x 100 = -84.49%