-28% is the change from 918 to 661
Calculation steps:
[( 661 - 918 ) ÷ 918] x 100 = -28%
Formula
Percentage change = [(661 - 918) / 918] x 100
Subtract the new number by the original number
661 - 918 = -257
-257 ÷ 918 = -0.27995642701525053
-0.27995642701525053 x 100 = -28%