-6.97% is the change from 646 to 601
Calculation steps:
[( 601 - 646 ) ÷ 646] x 100 = -6.97%
Formula
Percentage change = [(601 - 646) / 646] x 100
Subtract the new number by the original number
601 - 646 = -45
-45 ÷ 646 = -0.0696594427244582
-0.0696594427244582 x 100 = -6.97%