-93.43% is the change from 685 to 45
Calculation steps:
[( 45 - 685 ) ÷ 685] x 100 = -93.43%
Formula
Percentage change = [(45 - 685) / 685] x 100
Subtract the new number by the original number
45 - 685 = -640
-640 ÷ 685 = -0.9343065693430657
-0.9343065693430657 x 100 = -93.43%