-84.71% is the change from 667 to 102
Calculation steps:
[( 102 - 667 ) ÷ 667] x 100 = -84.71%
Formula
Percentage change = [(102 - 667) / 667] x 100
Subtract the new number by the original number
102 - 667 = -565
-565 ÷ 667 = -0.8470764617691154
-0.8470764617691154 x 100 = -84.71%