56.06% is the change from 635 to 991
Calculation steps:
[( 991 - 635 ) ÷ 635] x 100 = 56.06%
Formula
Percentage change = [(991 - 635) / 635] x 100
Subtract the new number by the original number
991 - 635 = 356
356 ÷ 635 = 0.5606299212598426
0.5606299212598426 x 100 = 56.06%