-5.43% is the change from 645 to 610
Calculation steps:
[( 610 - 645 ) ÷ 645] x 100 = -5.43%
Formula
Percentage change = [(610 - 645) / 645] x 100
Subtract the new number by the original number
610 - 645 = -35
-35 ÷ 645 = -0.05426356589147287
-0.05426356589147287 x 100 = -5.43%