-78.1% is the change from 662 to 145
Calculation steps:
[( 145 - 662 ) ÷ 662] x 100 = -78.1%
Formula
Percentage change = [(145 - 662) / 662] x 100
Subtract the new number by the original number
145 - 662 = -517
-517 ÷ 662 = -0.7809667673716012
-0.7809667673716012 x 100 = -78.1%