-19.9% is the change from 412 to 330
Calculation steps:
[( 330 - 412 ) ÷ 412] x 100 = -19.9%
Formula
Percentage change = [(330 - 412) / 412] x 100
Subtract the new number by the original number
330 - 412 = -82
-82 ÷ 412 = -0.19902912621359223
-0.19902912621359223 x 100 = -19.9%