-29.07% is the change from 664 to 471
Calculation steps:
[( 471 - 664 ) ÷ 664] x 100 = -29.07%
Formula
Percentage change = [(471 - 664) / 664] x 100
Subtract the new number by the original number
471 - 664 = -193
-193 ÷ 664 = -0.29066265060240964
-0.29066265060240964 x 100 = -29.07%