-19.59% is the change from 291 to 234
Calculation steps:
[( 234 - 291 ) ÷ 291] x 100 = -19.59%
Formula
Percentage change = [(234 - 291) / 291] x 100
Subtract the new number by the original number
234 - 291 = -57
-57 ÷ 291 = -0.1958762886597938
-0.1958762886597938 x 100 = -19.59%