-86.55% is the change from 223 to 30
Calculation steps:
[( 30 - 223 ) ÷ 223] x 100 = -86.55%
Formula
Percentage change = [(30 - 223) / 223] x 100
Subtract the new number by the original number
30 - 223 = -193
-193 ÷ 223 = -0.8654708520179372
-0.8654708520179372 x 100 = -86.55%