30.92% is the change from 663 to 868
Calculation steps:
[( 868 - 663 ) ÷ 663] x 100 = 30.92%
Formula
Percentage change = [(868 - 663) / 663] x 100
Subtract the new number by the original number
868 - 663 = 205
205 ÷ 663 = 0.3092006033182504
0.3092006033182504 x 100 = 30.92%