52.64% is the change from 644 to 983
Calculation steps:
[( 983 - 644 ) ÷ 644] x 100 = 52.64%
Formula
Percentage change = [(983 - 644) / 644] x 100
Subtract the new number by the original number
983 - 644 = 339
339 ÷ 644 = 0.5263975155279503
0.5263975155279503 x 100 = 52.64%