-78.33% is the change from 669 to 145
Calculation steps:
[( 145 - 669 ) ÷ 669] x 100 = -78.33%
Formula
Percentage change = [(145 - 669) / 669] x 100
Subtract the new number by the original number
145 - 669 = -524
-524 ÷ 669 = -0.7832585949177877
-0.7832585949177877 x 100 = -78.33%