-7.53% is the change from 664 to 614
Calculation steps:
[( 614 - 664 ) ÷ 664] x 100 = -7.53%
Formula
Percentage change = [(614 - 664) / 664] x 100
Subtract the new number by the original number
614 - 664 = -50
-50 ÷ 664 = -0.07530120481927711
-0.07530120481927711 x 100 = -7.53%