37.25% is the change from 51 to 70
Calculation steps:
[( 70 - 51 ) ÷ 51] x 100 = 37.25%
Formula
Percentage change = [(70 - 51) / 51] x 100
Subtract the new number by the original number
70 - 51 = 19
19 ÷ 51 = 0.37254901960784315
0.37254901960784315 x 100 = 37.25%