-89.12% is the change from 340 to 37
Calculation steps:
[( 37 - 340 ) ÷ 340] x 100 = -89.12%
Formula
Percentage change = [(37 - 340) / 340] x 100
Subtract the new number by the original number
37 - 340 = -303
-303 ÷ 340 = -0.8911764705882353
-0.8911764705882353 x 100 = -89.12%