-3.19% is the change from 940 to 910
Calculation steps:
[( 910 - 940 ) ÷ 940] x 100 = -3.19%
Formula
Percentage change = [(910 - 940) / 940] x 100
Subtract the new number by the original number
910 - 940 = -30
-30 ÷ 940 = -0.031914893617021274
-0.031914893617021274 x 100 = -3.19%