-76.76% is the change from 667 to 155
Calculation steps:
[( 155 - 667 ) ÷ 667] x 100 = -76.76%
Formula
Percentage change = [(155 - 667) / 667] x 100
Subtract the new number by the original number
155 - 667 = -512
-512 ÷ 667 = -0.767616191904048
-0.767616191904048 x 100 = -76.76%