-9.94% is the change from 664 to 598
Calculation steps:
[( 598 - 664 ) ÷ 664] x 100 = -9.94%
Formula
Percentage change = [(598 - 664) / 664] x 100
Subtract the new number by the original number
598 - 664 = -66
-66 ÷ 664 = -0.09939759036144578
-0.09939759036144578 x 100 = -9.94%