-86.21% is the change from 921 to 127
Calculation steps:
[( 127 - 921 ) ÷ 921] x 100 = -86.21%
Formula
Percentage change = [(127 - 921) / 921] x 100
Subtract the new number by the original number
127 - 921 = -794
-794 ÷ 921 = -0.8621064060803475
-0.8621064060803475 x 100 = -86.21%