-76.95% is the change from 321 to 74
Calculation steps:
[( 74 - 321 ) ÷ 321] x 100 = -76.95%
Formula
Percentage change = [(74 - 321) / 321] x 100
Subtract the new number by the original number
74 - 321 = -247
-247 ÷ 321 = -0.7694704049844237
-0.7694704049844237 x 100 = -76.95%