-26.51% is the change from 645 to 474
Calculation steps:
[( 474 - 645 ) ÷ 645] x 100 = -26.51%
Formula
Percentage change = [(474 - 645) / 645] x 100
Subtract the new number by the original number
474 - 645 = -171
-171 ÷ 645 = -0.2651162790697674
-0.2651162790697674 x 100 = -26.51%