-78.68% is the change from 680 to 145
Calculation steps:
[( 145 - 680 ) ÷ 680] x 100 = -78.68%
Formula
Percentage change = [(145 - 680) / 680] x 100
Subtract the new number by the original number
145 - 680 = -535
-535 ÷ 680 = -0.7867647058823529
-0.7867647058823529 x 100 = -78.68%