-28.9% is the change from 661 to 470
Calculation steps:
[( 470 - 661 ) ÷ 661] x 100 = -28.9%
Formula
Percentage change = [(470 - 661) / 661] x 100
Subtract the new number by the original number
470 - 661 = -191
-191 ÷ 661 = -0.28895612708018154
-0.28895612708018154 x 100 = -28.9%