5.43% is the change from 645 to 680
Calculation steps:
[( 680 - 645 ) ÷ 645] x 100 = 5.43%
Formula
Percentage change = [(680 - 645) / 645] x 100
Subtract the new number by the original number
680 - 645 = 35
35 ÷ 645 = 0.05426356589147287
0.05426356589147287 x 100 = 5.43%