-91.02% is the change from 668 to 60
Calculation steps:
[( 60 - 668 ) ÷ 668] x 100 = -91.02%
Formula
Percentage change = [(60 - 668) / 668] x 100
Subtract the new number by the original number
60 - 668 = -608
-608 ÷ 668 = -0.9101796407185628
-0.9101796407185628 x 100 = -91.02%