-29.67% is the change from 391 to 275
Calculation steps:
[( 275 - 391 ) ÷ 391] x 100 = -29.67%
Formula
Percentage change = [(275 - 391) / 391] x 100
Subtract the new number by the original number
275 - 391 = -116
-116 ÷ 391 = -0.2966751918158568
-0.2966751918158568 x 100 = -29.67%