-96.79% is the change from 312 to 10
Calculation steps:
[( 10 - 312 ) ÷ 312] x 100 = -96.79%
Formula
Percentage change = [(10 - 312) / 312] x 100
Subtract the new number by the original number
10 - 312 = -302
-302 ÷ 312 = -0.967948717948718
-0.967948717948718 x 100 = -96.79%