3210% is the change from 30 to 993
Calculation steps:
[( 993 - 30 ) ÷ 30] x 100 = 3210%
Formula
Percentage change = [(993 - 30) / 30] x 100
Subtract the new number by the original number
993 - 30 = 963
963 ÷ 30 = 32.1
32.1 x 100 = 3210%
Example