40.6% is the change from 670 to 942
Calculation steps:
[( 942 - 670 ) ÷ 670] x 100 = 40.6%
Formula
Percentage change = [(942 - 670) / 670] x 100
Subtract the new number by the original number
942 - 670 = 272
272 ÷ 670 = 0.4059701492537313
0.4059701492537313 x 100 = 40.6%