-78.05% is the change from 665 to 146
Calculation steps:
[( 146 - 665 ) ÷ 665] x 100 = -78.05%
Formula
Percentage change = [(146 - 665) / 665] x 100
Subtract the new number by the original number
146 - 665 = -519
-519 ÷ 665 = -0.7804511278195488
-0.7804511278195488 x 100 = -78.05%