-19.34% is the change from 331 to 267
Calculation steps:
[( 267 - 331 ) ÷ 331] x 100 = -19.34%
Formula
Percentage change = [(267 - 331) / 331] x 100
Subtract the new number by the original number
267 - 331 = -64
-64 ÷ 331 = -0.1933534743202417
-0.1933534743202417 x 100 = -19.34%