-89.21% is the change from 343 to 37
Calculation steps:
[( 37 - 343 ) ÷ 343] x 100 = -89.21%
Formula
Percentage change = [(37 - 343) / 343] x 100
Subtract the new number by the original number
37 - 343 = -306
-306 ÷ 343 = -0.892128279883382
-0.892128279883382 x 100 = -89.21%