3160% is the change from 30 to 978
Calculation steps:
[( 978 - 30 ) ÷ 30] x 100 = 3160%
Formula
Percentage change = [(978 - 30) / 30] x 100
Subtract the new number by the original number
978 - 30 = 948
948 ÷ 30 = 31.6
31.6 x 100 = 3160%
Example