-77.59% is the change from 665 to 149
Calculation steps:
[( 149 - 665 ) ÷ 665] x 100 = -77.59%
Formula
Percentage change = [(149 - 665) / 665] x 100
Subtract the new number by the original number
149 - 665 = -516
-516 ÷ 665 = -0.7759398496240602
-0.7759398496240602 x 100 = -77.59%