-16.3% is the change from 276 to 231
Calculation steps:
[( 231 - 276 ) ÷ 276] x 100 = -16.3%
Formula
Percentage change = [(231 - 276) / 276] x 100
Subtract the new number by the original number
231 - 276 = -45
-45 ÷ 276 = -0.16304347826086957
-0.16304347826086957 x 100 = -16.3%