-66.8% is the change from 994 to 330
Calculation steps:
[( 330 - 994 ) ÷ 994] x 100 = -66.8%
Formula
Percentage change = [(330 - 994) / 994] x 100
Subtract the new number by the original number
330 - 994 = -664
-664 ÷ 994 = -0.6680080482897385
-0.6680080482897385 x 100 = -66.8%