-3.15% is the change from 634 to 614
Calculation steps:
[( 614 - 634 ) ÷ 634] x 100 = -3.15%
Formula
Percentage change = [(614 - 634) / 634] x 100
Subtract the new number by the original number
614 - 634 = -20
-20 ÷ 634 = -0.031545741324921134
-0.031545741324921134 x 100 = -3.15%