-15.12% is the change from 602 to 511
Calculation steps:
[( 511 - 602 ) ÷ 602] x 100 = -15.12%
Formula
Percentage change = [(511 - 602) / 602] x 100
Subtract the new number by the original number
511 - 602 = -91
-91 ÷ 602 = -0.1511627906976744
-0.1511627906976744 x 100 = -15.12%