-77.69% is the change from 650 to 145
Calculation steps:
[( 145 - 650 ) ÷ 650] x 100 = -77.69%
Formula
Percentage change = [(145 - 650) / 650] x 100
Subtract the new number by the original number
145 - 650 = -505
-505 ÷ 650 = -0.7769230769230769
-0.7769230769230769 x 100 = -77.69%