-81.41% is the change from 355 to 66
Calculation steps:
[( 66 - 355 ) ÷ 355] x 100 = -81.41%
Formula
Percentage change = [(66 - 355) / 355] x 100
Subtract the new number by the original number
66 - 355 = -289
-289 ÷ 355 = -0.8140845070422535
-0.8140845070422535 x 100 = -81.41%