-84.88% is the change from 668 to 101
Calculation steps:
[( 101 - 668 ) ÷ 668] x 100 = -84.88%
Formula
Percentage change = [(101 - 668) / 668] x 100
Subtract the new number by the original number
101 - 668 = -567
-567 ÷ 668 = -0.8488023952095808
-0.8488023952095808 x 100 = -84.88%