-79.46% is the change from 331 to 68
Calculation steps:
[( 68 - 331 ) ÷ 331] x 100 = -79.46%
Formula
Percentage change = [(68 - 331) / 331] x 100
Subtract the new number by the original number
68 - 331 = -263
-263 ÷ 331 = -0.7945619335347432
-0.7945619335347432 x 100 = -79.46%