-8.4% is the change from 667 to 611
Calculation steps:
[( 611 - 667 ) ÷ 667] x 100 = -8.4%
Formula
Percentage change = [(611 - 667) / 667] x 100
Subtract the new number by the original number
611 - 667 = -56
-56 ÷ 667 = -0.08395802098950525
-0.08395802098950525 x 100 = -8.4%