-99.13% is the change from 345 to 3
Calculation steps:
[( 3 - 345 ) ÷ 345] x 100 = -99.13%
Formula
Percentage change = [(3 - 345) / 345] x 100
Subtract the new number by the original number
3 - 345 = -342
-342 ÷ 345 = -0.991304347826087
-0.991304347826087 x 100 = -99.13%