145.75% is the change from 400 to 983
Calculation steps:
[( 983 - 400 ) ÷ 400] x 100 = 145.75%
Formula
Percentage change = [(983 - 400) / 400] x 100
Subtract the new number by the original number
983 - 400 = 583
583 ÷ 400 = 1.4575
1.4575 x 100 = 145.75%