-6.75% is the change from 548 to 511
Calculation steps:
[( 511 - 548 ) ÷ 548] x 100 = -6.75%
Formula
Percentage change = [(511 - 548) / 548] x 100
Subtract the new number by the original number
511 - 548 = -37
-37 ÷ 548 = -0.06751824817518248
-0.06751824817518248 x 100 = -6.75%