-11.58% is the change from 311 to 275
Calculation steps:
[( 275 - 311 ) ÷ 311] x 100 = -11.58%
Formula
Percentage change = [(275 - 311) / 311] x 100
Subtract the new number by the original number
275 - 311 = -36
-36 ÷ 311 = -0.1157556270096463
-0.1157556270096463 x 100 = -11.58%