6.09% is the change from 608 to 645
Calculation steps:
[( 645 - 608 ) ÷ 608] x 100 = 6.09%
Formula
Percentage change = [(645 - 608) / 608] x 100
Subtract the new number by the original number
645 - 608 = 37
37 ÷ 608 = 0.06085526315789474
0.06085526315789474 x 100 = 6.09%