9780% is the change from 10 to 988
Calculation steps:
[( 988 - 10 ) ÷ 10] x 100 = 9780%
Formula
Percentage change = [(988 - 10) / 10] x 100
Subtract the new number by the original number
988 - 10 = 978
978 ÷ 10 = 97.8
97.8 x 100 = 9780%
Example