2.15% is the change from 930 to 950
Calculation steps:
[( 950 - 930 ) ÷ 930] x 100 = 2.15%
Formula
Percentage change = [(950 - 930) / 930] x 100
Subtract the new number by the original number
950 - 930 = 20
20 ÷ 930 = 0.021505376344086023
0.021505376344086023 x 100 = 2.15%