623.6% is the change from 89 to 644
Calculation steps:
[( 644 - 89 ) ÷ 89] x 100 = 623.6%
Formula
Percentage change = [(644 - 89) / 89] x 100
Subtract the new number by the original number
644 - 89 = 555
555 ÷ 89 = 6.235955056179775
6.235955056179775 x 100 = 623.6%