-8.43% is the change from 664 to 608
Calculation steps:
[( 608 - 664 ) ÷ 664] x 100 = -8.43%
Formula
Percentage change = [(608 - 664) / 664] x 100
Subtract the new number by the original number
608 - 664 = -56
-56 ÷ 664 = -0.08433734939759036
-0.08433734939759036 x 100 = -8.43%