-60.6% is the change from 830 to 327
Calculation steps:
[( 327 - 830 ) ÷ 830] x 100 = -60.6%
Formula
Percentage change = [(327 - 830) / 830] x 100
Subtract the new number by the original number
327 - 830 = -503
-503 ÷ 830 = -0.6060240963855422
-0.6060240963855422 x 100 = -60.6%