-66.6% is the change from 988 to 330
Calculation steps:
[( 330 - 988 ) ÷ 988] x 100 = -66.6%
Formula
Percentage change = [(330 - 988) / 988] x 100
Subtract the new number by the original number
330 - 988 = -658
-658 ÷ 988 = -0.6659919028340081
-0.6659919028340081 x 100 = -66.6%