53.5% is the change from 643 to 987
Calculation steps:
[( 987 - 643 ) ÷ 643] x 100 = 53.5%
Formula
Percentage change = [(987 - 643) / 643] x 100
Subtract the new number by the original number
987 - 643 = 344
344 ÷ 643 = 0.5349922239502333
0.5349922239502333 x 100 = 53.5%