-93.38% is the change from 680 to 45
Calculation steps:
[( 45 - 680 ) ÷ 680] x 100 = -93.38%
Formula
Percentage change = [(45 - 680) / 680] x 100
Subtract the new number by the original number
45 - 680 = -635
-635 ÷ 680 = -0.9338235294117647
-0.9338235294117647 x 100 = -93.38%