2.94% is the change from 68 to 70
Calculation steps:
[( 70 - 68 ) ÷ 68] x 100 = 2.94%
Formula
Percentage change = [(70 - 68) / 68] x 100
Subtract the new number by the original number
70 - 68 = 2
2 ÷ 68 = 0.029411764705882353
0.029411764705882353 x 100 = 2.94%