-74.85% is the change from 330 to 83
Calculation steps:
[( 83 - 330 ) ÷ 330] x 100 = -74.85%
Formula
Percentage change = [(83 - 330) / 330] x 100
Subtract the new number by the original number
83 - 330 = -247
-247 ÷ 330 = -0.7484848484848485
-0.7484848484848485 x 100 = -74.85%