1.55% is the change from 645 to 655
Calculation steps:
[( 655 - 645 ) ÷ 645] x 100 = 1.55%
Formula
Percentage change = [(655 - 645) / 645] x 100
Subtract the new number by the original number
655 - 645 = 10
10 ÷ 645 = 0.015503875968992248
0.015503875968992248 x 100 = 1.55%