2.64% is the change from 645 to 662
Calculation steps:
[( 662 - 645 ) ÷ 645] x 100 = 2.64%
Formula
Percentage change = [(662 - 645) / 645] x 100
Subtract the new number by the original number
662 - 645 = 17
17 ÷ 645 = 0.02635658914728682
0.02635658914728682 x 100 = 2.64%