-16.05% is the change from 511 to 429
Calculation steps:
[( 429 - 511 ) ÷ 511] x 100 = -16.05%
Formula
Percentage change = [(429 - 511) / 511] x 100
Subtract the new number by the original number
429 - 511 = -82
-82 ÷ 511 = -0.16046966731898238
-0.16046966731898238 x 100 = -16.05%