-19.03% is the change from 331 to 268
Calculation steps:
[( 268 - 331 ) ÷ 331] x 100 = -19.03%
Formula
Percentage change = [(268 - 331) / 331] x 100
Subtract the new number by the original number
268 - 331 = -63
-63 ÷ 331 = -0.1903323262839879
-0.1903323262839879 x 100 = -19.03%