-29.43% is the change from 666 to 470
Calculation steps:
[( 470 - 666 ) ÷ 666] x 100 = -29.43%
Formula
Percentage change = [(470 - 666) / 666] x 100
Subtract the new number by the original number
470 - 666 = -196
-196 ÷ 666 = -0.29429429429429427
-0.29429429429429427 x 100 = -29.43%