-84.42% is the change from 661 to 103
Calculation steps:
[( 103 - 661 ) ÷ 661] x 100 = -84.42%
Formula
Percentage change = [(103 - 661) / 661] x 100
Subtract the new number by the original number
103 - 661 = -558
-558 ÷ 661 = -0.8441754916792739
-0.8441754916792739 x 100 = -84.42%