3.09% is the change from 970 to 1000
Calculation steps:
[( 1000 - 970 ) ÷ 970] x 100 = 3.09%
Formula
Percentage change = [(1000 - 970) / 970] x 100
Subtract the new number by the original number
1000 - 970 = 30
30 ÷ 970 = 0.030927835051546393
0.030927835051546393 x 100 = 3.09%