-76.15% is the change from 650 to 155
Calculation steps:
[( 155 - 650 ) ÷ 650] x 100 = -76.15%
Formula
Percentage change = [(155 - 650) / 650] x 100
Subtract the new number by the original number
155 - 650 = -495
-495 ÷ 650 = -0.7615384615384615
-0.7615384615384615 x 100 = -76.15%