-27.02% is the change from 644 to 470
Calculation steps:
[( 470 - 644 ) ÷ 644] x 100 = -27.02%
Formula
Percentage change = [(470 - 644) / 644] x 100
Subtract the new number by the original number
470 - 644 = -174
-174 ÷ 644 = -0.2701863354037267
-0.2701863354037267 x 100 = -27.02%