-91.57% is the change from 356 to 30
Calculation steps:
[( 30 - 356 ) ÷ 356] x 100 = -91.57%
Formula
Percentage change = [(30 - 356) / 356] x 100
Subtract the new number by the original number
30 - 356 = -326
-326 ÷ 356 = -0.9157303370786517
-0.9157303370786517 x 100 = -91.57%