100% is the change from 87 to 174
Calculation steps:
[( 174 - 87 ) ÷ 87] x 100 = 100%
Formula
Percentage change = [(174 - 87) / 87] x 100
Subtract the new number by the original number
174 - 87 = 87
87 ÷ 87 = 1
1 x 100 = 100%
Example