-45.29% is the change from 340 to 186
Calculation steps:
[( 186 - 340 ) ÷ 340] x 100 = -45.29%
Formula
Percentage change = [(186 - 340) / 340] x 100
Subtract the new number by the original number
186 - 340 = -154
-154 ÷ 340 = -0.45294117647058824
-0.45294117647058824 x 100 = -45.29%