2.11% is the change from 950 to 970
Calculation steps:
[( 970 - 950 ) ÷ 950] x 100 = 2.11%
Formula
Percentage change = [(970 - 950) / 950] x 100
Subtract the new number by the original number
970 - 950 = 20
20 ÷ 950 = 0.021052631578947368
0.021052631578947368 x 100 = 2.11%