1.21% is the change from 662 to 670
Calculation steps:
[( 670 - 662 ) ÷ 662] x 100 = 1.21%
Formula
Percentage change = [(670 - 662) / 662] x 100
Subtract the new number by the original number
670 - 662 = 8
8 ÷ 662 = 0.012084592145015106
0.012084592145015106 x 100 = 1.21%