-65.91% is the change from 660 to 225
Calculation steps:
[( 225 - 660 ) ÷ 660] x 100 = -65.91%
Formula
Percentage change = [(225 - 660) / 660] x 100
Subtract the new number by the original number
225 - 660 = -435
-435 ÷ 660 = -0.6590909090909091
-0.6590909090909091 x 100 = -65.91%