-38.87% is the change from 355 to 217
Calculation steps:
[( 217 - 355 ) ÷ 355] x 100 = -38.87%
Formula
Percentage change = [(217 - 355) / 355] x 100
Subtract the new number by the original number
217 - 355 = -138
-138 ÷ 355 = -0.38873239436619716
-0.38873239436619716 x 100 = -38.87%