-84.7% is the change from 830 to 127
Calculation steps:
[( 127 - 830 ) ÷ 830] x 100 = -84.7%
Formula
Percentage change = [(127 - 830) / 830] x 100
Subtract the new number by the original number
127 - 830 = -703
-703 ÷ 830 = -0.846987951807229
-0.846987951807229 x 100 = -84.7%