50.23% is the change from 645 to 969
Calculation steps:
[( 969 - 645 ) ÷ 645] x 100 = 50.23%
Formula
Percentage change = [(969 - 645) / 645] x 100
Subtract the new number by the original number
969 - 645 = 324
324 ÷ 645 = 0.5023255813953489
0.5023255813953489 x 100 = 50.23%