-16.06% is the change from 330 to 277
Calculation steps:
[( 277 - 330 ) ÷ 330] x 100 = -16.06%
Formula
Percentage change = [(277 - 330) / 330] x 100
Subtract the new number by the original number
277 - 330 = -53
-53 ÷ 330 = -0.1606060606060606
-0.1606060606060606 x 100 = -16.06%