-48.7% is the change from 345 to 177
Calculation steps:
[( 177 - 345 ) ÷ 345] x 100 = -48.7%
Formula
Percentage change = [(177 - 345) / 345] x 100
Subtract the new number by the original number
177 - 345 = -168
-168 ÷ 345 = -0.48695652173913045
-0.48695652173913045 x 100 = -48.7%