53.18% is the change from 645 to 988
Calculation steps:
[( 988 - 645 ) ÷ 645] x 100 = 53.18%
Formula
Percentage change = [(988 - 645) / 645] x 100
Subtract the new number by the original number
988 - 645 = 343
343 ÷ 645 = 0.5317829457364341
0.5317829457364341 x 100 = 53.18%