-26.63% is the change from 646 to 474
Calculation steps:
[( 474 - 646 ) ÷ 646] x 100 = -26.63%
Formula
Percentage change = [(474 - 646) / 646] x 100
Subtract the new number by the original number
474 - 646 = -172
-172 ÷ 646 = -0.26625386996904027
-0.26625386996904027 x 100 = -26.63%