54.73% is the change from 645 to 998
Calculation steps:
[( 998 - 645 ) ÷ 645] x 100 = 54.73%
Formula
Percentage change = [(998 - 645) / 645] x 100
Subtract the new number by the original number
998 - 645 = 353
353 ÷ 645 = 0.5472868217054263
0.5472868217054263 x 100 = 54.73%