20.15% is the change from 536 to 644
Calculation steps:
[( 644 - 536 ) ÷ 536] x 100 = 20.15%
Formula
Percentage change = [(644 - 536) / 536] x 100
Subtract the new number by the original number
644 - 536 = 108
108 ÷ 536 = 0.20149253731343283
0.20149253731343283 x 100 = 20.15%