21.62% is the change from 37 to 45
Calculation steps:
[( 45 - 37 ) ÷ 37] x 100 = 21.62%
Formula
Percentage change = [(45 - 37) / 37] x 100
Subtract the new number by the original number
45 - 37 = 8
8 ÷ 37 = 0.21621621621621623
0.21621621621621623 x 100 = 21.62%